Yes
You can't. You need to see that Pokemon before asking for it. You can also try the GTS Negotations and see if someone is willing to trade you the Pokemon you want/need.
no
the Pokemon on the gts list are the ones that you have seen, you have to see a mew to get it on there
You can't check what Pokemon are up for trade beforehand.
i need to know how to trade Pokemon on gts after i put Pokemon the offering Pokemon and the Pokemon i wanted but i still cant trade with the Pokemon
The only way you can see all the Pokemon on diamond is by going into the GTS and global trade different Pokemon.
you need a wifi conecter for it to work
no you need computer acess point
You need to actually see a Pokemon before you can request it or trade it.
No, you just have to put your Pokemon on offer and leave the gts if u want. then come back and see if someone traded with you.
Sorry, but you can't. The only possible way is to use GTS. THIS IS A JOKE YOU CAN BUT YOU NEED A BIDOOF
Any Pokemon that isn't an event Pokemon can be traded on the GTS.